US20090314165A1 - Device for supplying milk - Google Patents
Device for supplying milk Download PDFInfo
- Publication number
- US20090314165A1 US20090314165A1 US12/307,760 US30776007A US2009314165A1 US 20090314165 A1 US20090314165 A1 US 20090314165A1 US 30776007 A US30776007 A US 30776007A US 2009314165 A1 US2009314165 A1 US 2009314165A1
- Authority
- US
- United States
- Prior art keywords
- supply line
- hot water
- storage tank
- inlet end
- milk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/4485—Nozzles dispensing heated and foamed milk, i.e. milk is sucked from a milk container, heated and foamed inside the device, and subsequently dispensed from the nozzle
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/60—Cleaning devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
Description
- The present application claims the benefit of priority of International Patent Application No. PCT/EP2007/006299, filed Jul. 16, 2007 which application claims priority of European Patent Application No. 06014893.9, filed Jul. 14, 2006. The entire text of the priority application is incorporated herein by reference in its entirety.
- The disclosure relates to a device for supplying milk, and particularly a cleaning device for a device for supplying milk.
- Such a device is known from EP 344 859. The known device serves to dispense heated milk and further contains a frothing device, by means of which the milk can additionally be frothed. Most different operating principles of frothing devices for milk are known. In the device described, for example, the milk is drawn in from a storage tank by means of the Venturi principle. This is accomplished through a supply line in the form of a hose, the outlet end of which is connected to the frothing device and the inlet end of which is simply inserted into a storage tank for milk. A problem involved by all milk handling devices is the cleaning. Milk is a perishable product, so that the components coming into contact with milk should be cleaned as often and as thoroughly as possible. Inside the heating and frothing device this is not so problematical because steam is used therein, so that the frothing device is relatively easy to clean with a pure steam blast, without the introduction of milk, whereby, at least until the next thorough cleaning procedure involving the disassembly of the components and/or the use of cleaning agents, the growth of bacteria is safely prevented. However, as there is no natural way for the steam into the supply line, the supply line can, in this manner, not or at least not sufficiently be cleaned. In connection with the known device it is, therefore, proposed to place the inlet end of the supply line into a cleaning liquid in the meantime and, by operating the device, to draw in the cleaning liquid instead of milk through the supply line. However, this is complicated and may not lead to the desired result. To thoroughly clean the supply line, also hot, nearly boiling water could be used, which is difficult to handle, however, and is not always available either. Cold or merely warm water does not bring about the desired cleaning result. If chemical cleaning agents are used, a complicated rinsing has to be performed afterwards to make sure that all residues are removed from the device.
- Therefore, the disclosure concerns a device of the above-described type further to facilitate the cleaning.
- The embodiment according to the disclosure provides for a very effective cleaning system for the milk-conducting supply line. The use of hot water and/or steam, which are provided for conveying or heating the milk anyhow, allows an effective cleaning of the supply line. To this end, merely a hot water and/or steam outlet has to be provided, unless it is already provided anyhow (which is the case in most coffee machines), and the user merely has to remove the inlet end of the supply line from the milk storage tank and fix it to the outlet so as to be able to perform the cleaning procedure.
- In order to facilitate replugging the inlet end of the supply line, the outlet is preferably arranged in the region of the storage tank.
- If the cleaning is accomplished with hot water, residual hot water left in the supply line should be removed so as to avoid jeopardizing the user. This can be accomplished with the most various measures.
- In order to facilitate replugging the supply line, the connecting device may comprise a specifically adapted coupling piece. It is also possible, however, to adapt the dimensions of the outlet to the dimensions of the supply line in such a way that both can be plugged into one another.
- The supply line can be fixed either into or to the storage tank. A particularly preferred and easy to clean embodiment is achieved if the supply line is fixed to the storage tank, namely to an intake nozzle permanently integrated into the storage tank. By this, the intake nozzle can be easily cleaned together with the storage tank, e.g. in a dishwasher, while an interior cleaning of the supply line takes place in the manner according to the disclosure.
- Particularly advantageous is the use of the device according to the disclosure in a coffee machine, wherein the hot water outlet or steam outlet, respectively, which is provided in coffee machines anyhow, is provided according to the disclosure with the connecting device in such a way that the supply line can be fixed to the same.
- Embodiments of the disclosure shall be explained in more detail by means of the drawings below: In the drawings:
-
FIG. 1 shows a schematic representation of a first principle of the disclosure; -
FIG. 2 shows a schematic representation of a second principle of the disclosure; -
FIG. 3 shows a schematic representation of a third principle of the disclosure; and -
FIG. 4 shows a schematic representation of a coffee machine according to the disclosure. -
FIG. 1 shows a first embodiment of an the discloseddevice 1 for supplying milk from astorage tank 2 to adispensing device 3. Thedevice 1, which is only illustrated as a schematic diagram, may be a part of any device handling milk in the described manner. In the embodiment shown, thedevice 1 is designed as a device for preparing and dispensing heated milk froth and comprises, to this end, afrothing device 4, which may constructed in a manner known per se, e.g. the frothing device according to DE 44 45 436. The operating mode and the constructional design of frothing devices are known and need not be explained. - The
frothing device 4 is connected to thestorage tank 2 for the milk by asupply line 5. Thesupply line 5 is detachably fixed with itsinlet end 5 a into or to thestorage tank 2. In the embodiment shown, it is simply placed into thestorage tank 2. Theoutlet end 5 b of thesupply line 5 is fixed to thefrothing device 4, where it may likewise be mounted in a detachable manner so as to allow a disassembly for a basic cleaning procedure. Preferably, thesupply line 5 is flexible, and specifically is a flexible hose made of plastic or rubber. - In the embodiment shown, the
frothing device 4 is supplied with air through aline 6, whereby the air is drawn in either according to the Venturi principle or is provided as compressed air, e.g. by acompressed air source 7 such as a compressed air cartridge or a pump or the like. - Through another
line 8 thefrothing device 4 is supplied with steam for heating the milk. Theline 8 is connected to anappropriate steam generator 9. Thesteam generator 9 is of a conventional type and may be designed, for example, as a flow heater. However, preferably a combined hot water and steam generator is used, which supplies not only steam for thefrothing device 4, but also hot water for ahot water outlet 10. Thehot water outlet 10, through which also steam portions can be discharged, is accessible to the user and arranged in such a way that it is located in the region of theinlet end 5 a of thesupply line 5, if thesupply line 5 is connected to thefrothing device 4. Thehot water outlet 10 should be arranged with a distance from theoutlet end 5 b of thesupply line 5, which distance is equal to or smaller than the total length of thesupply line 5 between the inlet andoutlet ends hot water outlet 10 is arranged in the region of thestorage tank 2 for the milk. - The
hot water outlet 10 and/or theinlet end 5 a of thesupply line 5 are provided with a connectingdevice 11. In the embodiment shown, the connectingdevice 11 comprises acoupling piece 12, which is fixed to thehot water outlet 10. However, the connectingdevice 11 can also be formed by corresponding connecting pieces at theoutlet 10 and at theinlet end 5 a, or by a coupling piece alone at theinlet end 5 a. The connecting device may be of any appropriate construction, e.g. in the form of a locking connection, a plug-in connection or a bayonet connection, which is suited to realize an easily detachable connection between thesupply line 5 and theoutlet 10, by simultaneously withstanding the mechanical loads exerted by the hot water discharged or pressed out under pressure. Moreover, it is possible to realize the connectingdevice 11 by merely adapting the dimensions between the outer and inner dimensions of theoutlet 10 and theinlet end 5 a, so that theinlet end 5 a and theoutlet 10 can simply be plugged together. This is particularly expedient if theinlet end 5 a has a certain material elasticity, which is the case, for example, with a hose made of rubber or plastic. - The
outlet 10 together with the connectingdevice 11 for theinlet end 5 a of thesupply line 5 form a cleaning device for thesupply line 5. - The
device 1 according to the disclosure is commonly operated to prepare and dispense milk froth, to heat and dispense heated milk or to dispense cold milk, whereby the frothing of milk is accomplished by supplying air and steam into thefrothing device 4, which draw in milk from thestorage tank 2 through thesupply line 5 and dispense milk froth ready to use through thedispensing device 3. If the milk is to be heated only, merely steam is supplied into thefrothing device 4, which draws in milk from thestorage tank 2 and dispenses heated milk through thedispensing device 3. If milk only is to be dispensed, only air is supplied into thefrothing device 4, which draws in milk from thestorage tank 2 and dispenses the cold milk through thedispensing device 3. - The cleaning of the
frothing device 4 can be accomplished in the usual manner by means of a steam blast. However, in order to be able to clean thesupply line 5 as well, theinlet end 5 a of thesupply line 5 is disconnected from thestorage tank 2, i.e., in the embodiment shown, is drawn out of thestorage tank 2 and is connected to thehot water outlet 10, while theoutlet end 5 b of thesupply line 5 remains connected to thedispensing device 3 and thefrothing device 4. Then, requested via an operating element, preferably by the user, a gush of hot water is conducted from theoutlet 10 into thesupply line 5 for some time, e.g. for some seconds. This gush of hot water thoroughly rinses thesupply line 5 and simultaneously also cleans the components of thefrothing device 4 and thedispensing device 3 contaminated by the milk, and is subsequently discharged through thedispensing device 3. - Due to the high temperature of the hot water, especially if it is provided by a combined hot water/
steam generator 9, it should be made sure that no residual hot water is left in thesupply line 5 when theinlet end 5 a of thesupply line 5 is separated again from theoutlet 10. This can be accomplished with the most different measures. For example, the arrangement and the constructive design of the components may be chosen such that theoutlet end 5 b of thesupply line 5 is located at the deepest point of thesupply line 5, so that the residual hot water flows out under the influence of gravity. If a flow heater is used for preparing hot water, it can be ensured by appropriately controlling same that the heater is switched off prior to the end of the cleaning procedure, so that only cold water is left in thesupply line 5 after the end of the cleaning procedure. If also steam is available at thehot water outlet 10, a steam blast can be discharged via theoutlet 10 at the end of the cleaning procedure, which presses residual hot water out of the supply line. If the frothing in thefrothing device 4 is accomplished by means of steam, as is shown inFIG. 1 , it is further possible to blow steam throughline 8 into thefrothing device 4, which draws in the residual hot water fromline 5. -
FIG. 2 shows adevice 1′ according to the disclosure, which differs from device I according toFIG. 1 only by the details described below, whereby like or comparable components are designated with like reference numbers and shall not be explained again. - The
device 1′ merely differs fromdevice 1 in that the introduction of the milk from thestorage tank 2 into thedispensing device 3 and thefrothing device 4, respectively, is accomplished or supported, respectively, by apump 13. Thepump 13 is mounted in thesupply line 5 between theinlet end 5 a in thestorage tank 2 and theoutlet end 5 b at thefrothing device 4. The operation ofdevice 1′ and the cleaning procedure correspond to the methods already explained by means ofFIG. 1 . Merely the driving out of residual hot water can here be accomplished in a simple manner by actuating thepump 13. -
FIG. 3 shows another embodiment of adevice 1″ according to the disclosure, which differs fromdevices FIG. 1 andFIG. 2 only by the details described below, whereby like or comparable components are designated with like reference numbers and shall not be explained again. -
Device 1″ merely differs by a modifiedstorage tank 2″, which comprises the milk receiving space and an intake nozzle 2 a fixed to the storage tank. In the embodiment shown, the intake nozzle 2 a is connected to thestorage tank 2″ in such a way that both can be cleaned together in a dishwasher without problems. Thus, the intake nozzle 2 a is connected to thestorage tank 2″ either permanently or detachably. The intake nozzle is dimensioned and arranged in such a way that theinlet end 5 a of thesupply line 5 is detachably connected to the intake nozzle 2 a outside of the milk level in thestorage tank 2″. In the embodiment shown, the intake nozzle is a small tube vertically immersed into thestorage tank 2″, which comprises an intake opening slightly above the bottom of thestorage tank 2″ and reaches over the milk level in thestorage tank 2″, where it can be connected to theinlet end 5 a of thesupply line 5, whereby theinlet end 5 a is preferably fitted onto the intake nozzle 2 a. For cleaning purposes theinlet end 5 a is removed from the intake nozzle 2 a and is connected to the connectingdevice 11. - The
devices coffee machine 100 according toFIG. 4 . The coffee machine equipped according to the disclosure is of the standard type, i.e. is constructed as a semiautomatic or fully automatic machine and is controlled by a non-illustrated control unit. - The
coffee machine 100 comprises acasing 17, in which and on which the standard elements of coffee machines are mounted. By anoperating element 14 the user may request various beverages, which are then automatically prepared and dispensed by the coffee machine. - To this end, the
coffee machine 100 comprises, for example, a standard boilingunit 15, which is supplied with hot water from thehot water apparatus 9 through aline 15 a and which is connected to acoffee outlet 16 by aline 15 b. Thecoffee machine 100 further comprises the already described frothingdevice 4 with thesupply line 5. In the embodiment shown, thestorage tank 2 for milk is, for example, a commercially available milk carton, which is accommodated in a holder. However, thestorage tank 2 may also be a preferably cooled chamber in the interior of thecasing 17 of thecoffee machine 100. - The
coffee machine 100 is provided with one of the standardhot water outlets 10, as are provided on many coffee machines to allow the preparation of tea. Thecoffee machine 100 further comprises aseparate steam outlet 18, which is formed as a pivoted lever and serves, for example, to heat beverages and other liquids (soups). - The
hot water outlet 10 and/or thesteam outlet 18 are provided with the connectingdevice 11 for connecting theinlet end 5 a of thesupply line 5. In the embodiment shown,coupling elements 12 are provided on both connections. - In the embodiment shown, the
hot water outlet 10 is arranged in the proximity of thestorage tank supply line 5 thereat. Although thesteam outlet 18 is located on the side of thefrothing device 4 which faces away from thestorage tank coupling piece 12 and thefrothing device 4 is smaller than the length of thesupply line 5, so that theinlet end 5 a can also be connected to thesteam outlet 18. - In the
coffee machine 100, too, the cleaning procedure for thesupply line 5 can be performed in a way already described by means ofFIGS. 1 to 3 , whereby thesupply line 5 is cleaned either with hot water or with steam. To this end, the user, once he has connected theinlet end 5 a to the hot water orsteam outlet element 14 either the discharge of a hot water blast for a preparation of tea or the discharge of a steam blast for heating purposes, depending on where thesupply line 5 is connected. - Also the driving out of residual hot water may be accomplished in the above-described manner.
- The cleaning procedure according to the disclosure can take place either during a general cleaning of the device or the coffee machine, respectively, but can preferably be performed as an intermediate cleaning step, if necessary each time after milk was dispensed. Thus, the increase of harmful germs is effectively suppressed. The intake nozzle could also be fixed to the storage tank in another way, for example, it could laterally penetrate through the wall of the storage tank or extend out of the bottom. However, the storage tank provided with an intake nozzle also facilitates the cleaning of coffee machines or other milk dispensing apparatus not comprising a connecting device, i.e. the supply line of which has to be cleaned in the conventional way.
Claims (11)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05027220 | 2005-12-13 | ||
EP06014893 | 2006-07-14 | ||
EP06014893.9A EP1797801B1 (en) | 2005-12-13 | 2006-07-14 | A coffee machine with a milk conduct cleaning device |
EP06014893.9 | 2006-07-14 | ||
PCT/EP2007/006299 WO2008006623A2 (en) | 2006-07-14 | 2007-07-16 | Device for supplying milk |
Publications (2)
Publication Number | Publication Date |
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US20090314165A1 true US20090314165A1 (en) | 2009-12-24 |
US8739688B2 US8739688B2 (en) | 2014-06-03 |
Family
ID=41460143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/307,760 Active 2029-07-20 US8739688B2 (en) | 2005-12-13 | 2007-07-16 | Device for supplying milk |
Country Status (2)
Country | Link |
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US (1) | US8739688B2 (en) |
EP (1) | EP1797801B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20090038655A1 (en) * | 2007-08-07 | 2009-02-12 | Gruppo Cimbali S.P.A. | Apparatus for washing circuits involved in the preparation of milk-based beverages |
US20100047406A1 (en) * | 2006-12-27 | 2010-02-25 | Shahryar Reyhanloo | Method for dispensing milk portions in drink preparation machines |
US20110005407A1 (en) * | 2009-07-08 | 2011-01-13 | Jura Elektroapparate Ag | Beverage preparation machine and method for cleaning a beverage preparation machine |
US20120104038A1 (en) * | 2010-10-29 | 2012-05-03 | Gruppo Cimbali S.P.A | Replaceable end-piece for a vapour nozzle of a coffee machine |
US20120297988A1 (en) * | 2010-02-11 | 2012-11-29 | Koninklijke Philips Electronics N.V. | Device for heating and frothing a liquid |
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ES2340625T3 (en) | 2007-04-18 | 2010-06-07 | Daviplast - Servicos De Consultoria, Sociedade Unipessoal Lda. | PALLET CONTAINER. |
EP2020197B1 (en) * | 2007-07-24 | 2009-12-09 | Gruppo Cimbali S.p.A. | Apparatus for washing circuits involved in the preparation of milk-based beverages |
JP5405099B2 (en) * | 2008-12-24 | 2014-02-05 | ホシザキ電機株式会社 | Beverage dispenser |
DE102009034234B4 (en) * | 2009-07-23 | 2013-06-13 | Wmf Württembergische Metallwarenfabrik Ag | Vending Machine |
EP2353473A1 (en) * | 2010-02-03 | 2011-08-10 | Nestec S.A. | Beverage dispenser with hygienic cleaning cycle |
DE102010007143B4 (en) | 2010-02-05 | 2013-08-22 | Eugster/Frismag Ag | Coffee machine with a foaming device and means for cleaning the foaming device and a milk suction line and method for rinsing the milk suction line |
DE102010010516A1 (en) * | 2010-03-05 | 2011-09-08 | Kaffee Partner Service Gmbh | Coffee machine and method for cleaning the same |
DE102011077776B4 (en) * | 2011-06-17 | 2013-11-14 | Wmf Württembergische Metallwarenfabrik Ag | Device for heating and frothing a beverage product |
DE202011107306U1 (en) | 2011-11-02 | 2012-01-11 | Eugster/Frismag Ag | Coffee machine, espresso machine in particular |
DE102012200280B4 (en) | 2012-01-11 | 2017-02-09 | BSH Hausgeräte GmbH | Vending Machine |
CN106859345A (en) * | 2017-03-28 | 2017-06-20 | 宁波美侬咖啡机有限公司 | Pipe-line system and method that a kind of coffee machine milk road is cleaned automatically |
DE102019128128A1 (en) * | 2019-10-17 | 2021-04-22 | Franke Kaffeemaschinen Ag | Device for dispensing liquid flavor additives for flavored beverages |
GB2610877A (en) | 2021-09-21 | 2023-03-22 | Douwe Egberts Bv | A connector for a fluid dispensing apparatus |
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US20100047406A1 (en) * | 2006-12-27 | 2010-02-25 | Shahryar Reyhanloo | Method for dispensing milk portions in drink preparation machines |
US8944287B2 (en) * | 2006-12-27 | 2015-02-03 | Jura Elektroapparate Ag | Method for dispensing milk portions in drink preparation machines |
US9144345B2 (en) | 2006-12-27 | 2015-09-29 | Jura Elektroapparate Ag | Method for dispensing milk portions in drink preparation machines |
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US20120297988A1 (en) * | 2010-02-11 | 2012-11-29 | Koninklijke Philips Electronics N.V. | Device for heating and frothing a liquid |
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Also Published As
Publication number | Publication date |
---|---|
EP1797801B1 (en) | 2014-01-08 |
EP1797801A1 (en) | 2007-06-20 |
US8739688B2 (en) | 2014-06-03 |
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Legal Events
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AS | Assignment |
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